Add tmux-kubectx (#141)

Author: tony-sol

README.md

@@ -109,6 +109,7 @@ List of helpful tmux links for various tutorials, plugins, and configuration set
 - [tmux-current-pane-hostname](https://github.com/tony-sol/tmux-current-pane-hostname) Show current user and hostname in ssh sessions
 - [tmux-df](https://github.com/tassaron/tmux-df) - Show available disk space (output of df command)
 - [tmux-kripto](https://github.com/vascomfnunes/tmux-kripto) Add a cryptocurrency stock price to the statusbar.
+- [tmux-kubectx](https://github.com/tony-sol/tmux-kubectx) Show kubernetes context in statusbar
 - [tmux-maildir-counter](https://github.com/tmux-plugins/tmux-maildir-counter) Plugin that counts files on a specific mail directory
 - [tmux-mem-cpu-load](https://github.com/thewtex/tmux-mem-cpu-load) CPU, RAM memory, and load monitor for use with tmux
 - [tmux-mode-indicator](https://github.com/MunifTanjim/tmux-mode-indicator) Displays prompt indicating currently active Tmux mode.